network: make TCP_BACKLOG_DEFAULT a compile time define and set to default

This was previously hardcoded to 16. This makes it at least a compile time
define, with a default of 511 (as that's what Redis and Apache use).
25 jobs for tcp-backlog-default in 30 minutes and 1 second (queued for 3 seconds)
Status Job ID Name Coverage
  Build
passed #192291
amd64 linux docker
build:clang:linux:amd64

00:00:45

passed #192290
amd64 linux docker
build:linux:amd64

00:00:48

passed #192292
amd64 linux docker allowed to fail
srpm

00:00:25

 
  Test
passed #192299
amd64 linux docker
deckard:linux:amd64

00:01:17

passed #192304
privileged
distro:epel-7

00:01:34

passed #192303
privileged
distro:fedora-29

00:02:17

passed #192298
docker
doc

00:00:50

passed #192297
amd64 linux docker
installcheck:linux:amd64

00:00:52

passed #192300
amd64 linux docker
installcheck:valgrind:linux:amd64

00:01:44

passed #192294
docker
lint:c

00:02:16

failed #192295
docker allowed to fail
lint:clang-scan-build

00:01:02

passed #192293
docker
lint:lua

00:00:33

passed #192302
amd64 linux docker
respdiff:iter:udp:linux:amd64

00:02:14

passed #192296
amd64 linux docker
test:linux:amd64

00:01:04

passed #192301
amd64 linux docker
test:linux:amd64:valgrind

00:01:14

 
  Respdiff
passed #192305
respdiff
respdiff:fwd-tls6-kresd.udp6

00:13:48

failed #192306
respdiff
respdiff:fwd-udp6-kresd.udp6

00:10:51

failed #192310
respdiff
respdiff:fwd-udp6-unbound.tcp6

00:26:51

failed #192311
respdiff
respdiff:fwd-udp6-unbound.tls6

00:24:21

failed #192309
respdiff
respdiff:fwd-udp6-unbound.udp6

00:21:51

failed #192308
respdiff
respdiff:iter.tls6

00:10:52

failed #192307
respdiff
respdiff:iter.udp6

00:11:21

passed #192312
respdiff
resperf:fwd-tls6.udp-asan

00:23:17

passed #192313
respdiff
resperf:fwd-udp6.udp-asan

00:16:16

passed #192314
respdiff
resperf:iter.udp-asan

00:18:46

 
Name Stage Failure
failed
respdiff:fwd-udp6-unbound.tls6 Respdiff
Running after script...
$ cp -t . respdiff_commitdir/$RESPDIFF_TEST/j* ||:
$ cp -t . respdiff_commitdir/*$RESPDIFF_TEST*.png ||:
Uploading artifacts...
Runtime platform arch=amd64 os=linux pid=34268 revision=cf91d5e1 version=11.4.2
./j*: found 9 matching files

./*.png: found 3 matching files

Uploading artifacts to coordinator... ok
id=192311 responseStatus=201 Created token=vsu3E3iD
ERROR: Job failed: exit status 1
failed
respdiff:fwd-udp6-unbound.tcp6 Respdiff
Running after script...
$ cp -t . respdiff_commitdir/$RESPDIFF_TEST/j* ||:
$ cp -t . respdiff_commitdir/*$RESPDIFF_TEST*.png ||:
Uploading artifacts...
Runtime platform arch=amd64 os=linux pid=34398 revision=cf91d5e1 version=11.4.2
./j*: found 9 matching files

./*.png: found 3 matching files

Uploading artifacts to coordinator... ok
id=192310 responseStatus=201 Created token=7mjMATxe
ERROR: Job failed: exit status 1
failed
respdiff:iter.udp6 Respdiff
Running after script...
$ cp -t . respdiff_commitdir/$RESPDIFF_TEST/j* ||:
$ cp -t . respdiff_commitdir/*$RESPDIFF_TEST*.png ||:
Uploading artifacts...
Runtime platform arch=amd64 os=linux pid=33410 revision=cf91d5e1 version=11.4.2
./j*: found 9 matching files

./*.png: found 3 matching files

Uploading artifacts to coordinator... ok
id=192307 responseStatus=201 Created token=K9af8HNE
ERROR: Job failed: exit status 1
failed
respdiff:fwd-udp6-kresd.udp6 Respdiff
Running after script...
$ cp -t . respdiff_commitdir/$RESPDIFF_TEST/j* ||:
$ cp -t . respdiff_commitdir/*$RESPDIFF_TEST*.png ||:
Uploading artifacts...
Runtime platform arch=amd64 os=linux pid=33296 revision=cf91d5e1 version=11.4.2
./j*: found 9 matching files

./*.png: found 3 matching files

Uploading artifacts to coordinator... ok
id=192306 responseStatus=201 Created token=-f8gYVUw
ERROR: Job failed: exit status 1
failed
respdiff:iter.tls6 Respdiff
Running after script...
$ cp -t . respdiff_commitdir/$RESPDIFF_TEST/j* ||:
$ cp -t . respdiff_commitdir/*$RESPDIFF_TEST*.png ||:
Uploading artifacts...
Runtime platform arch=amd64 os=linux pid=33332 revision=cf91d5e1 version=11.4.2
./j*: found 9 matching files

./*.png: found 3 matching files

Uploading artifacts to coordinator... ok
id=192308 responseStatus=201 Created token=EqDBTTbs
ERROR: Job failed: exit status 1
failed
respdiff:fwd-udp6-unbound.udp6 Respdiff
Running after script...
$ cp -t . respdiff_commitdir/$RESPDIFF_TEST/j* ||:
$ cp -t . respdiff_commitdir/*$RESPDIFF_TEST*.png ||:
Uploading artifacts...
Runtime platform arch=amd64 os=linux pid=34070 revision=cf91d5e1 version=11.4.2
./j*: found 9 matching files

./*.png: found 3 matching files

Uploading artifacts to coordinator... ok
id=192309 responseStatus=201 Created token=pQuxas8v
ERROR: Job failed: exit status 1
failed
lint:clang-scan-build Test
  CCLD	modules/stats/stats.so
CCLD modules/bogus_log/bogus_log.so
CCLD modules/nsid/nsid.so
scan-build: 32 bugs found.
scan-build: Run 'scan-view /builds/knot/knot-resolver/scan-results/2018-11-13-120209-15-1' to examine bug reports.
Uploading artifacts...
scan-results: found 37 matching files
Uploading artifacts to coordinator... ok
id=192295 responseStatus=201 Created token=bySDy954
ERROR: Job failed: exit code 1